Given how the conversation has progressed thus far, Sasuke fully expects his words to go unheeded. Should any make any kind of impact then that'll be something he assumes will be processed in private, alone, along with the rest of Sans's feelings. Yeah, he feels you, man.

"Wait," he interjects suddenly, head remaining unturned and gaze still ostensibly focused on the scenery before them.

Surely he must have something important to say, as a man of so few words. Surely. Either that, or...

"Are you the one that incorrectly remade the beds?"